I have a 7,250 watt ETQ at home, a 6,500 watt Honda on a truck at work..
The Honda is quieter, easier to start - but the carb fouls out from intermittent use just like the ETQ does..
After Sandy I swore I'd never go through that again, and started searching for a whole house natural gas generator.. almost bought a 12kw Generac from Costco.. then I started reading about all the nightmare stories - people paying $5,000 to $10,000 on a Generac that was fine for the ocassional few hours, or day here and there when the power died. But then, when Sandy hit and people were without power for 3 weeks, ALOT of those people had their generators die within the first week of constant use.. so their now "out of warranty" generator needs a repair man - you wait for that, then he has to order parts, you wait for that, then you have to wait for the repair guy to come back - which is what everyone else was doing too -, and then finally 2 or 3 weeks later, your power is back on, and you get handed a $1500 repair bill to fix a generator that you couldn't use when you needed it most.
So instead - I have a $700 portable unit that'll do my whole house except my central air, or my central air and maybe a few other things.. if it lasts a few weeks and dies - I got my money's worth and I'll go buy another.. I bought a $200 tri fuel kit for it from USCARB.COM ( that I'm installing finally with my new carb)
For anyone considering a whole house unit - buy a Kohler over a Generac. I couldn't find one in 12kw for under $4000 at the time so I passed.. spend a few hours reading online, and you'll find out why I say get a Kohler..